170 PI-MAX
®
4 System Manual Issue 9
4. On the Trigger expander, select Internal or External triggering.
External: Verify the trigger characteristics on the Trigger expander match the active
trigger edge for the trigger pulse being used.
Internal: Perform the following procedure to configure the Internal Trigger parameters
on the
SuperSYNCHRO Timing expander:
f. Use the hyperlinks at the top of the SuperSYNCHRO Timing expander to make any
changes to:
• Intensifier Settings;
• Trigger Settings;
• Phosphor Decay Delay;
• Frames to Save (must be a multiple of 2);
• Readout Mode (must be set to DIF.)
g. Configure the Internal Trigger Frequency.
h. Configure the Gate Width and Gate Delay times for each of the two images.
• The Initial Gate Delay time must be 86 µs.
• The Second Gate Delay time must be greater than:
Phosphor Decay + Minimum Camera Delay
Typical camera values are:
— Phosphor Decay = 1 µs
— Minimum Delay = 30 ns
Therefore, a typical minimum value is 1.03 µs.
i. Configure the AUX Output Trigger as necessary.
j. To enable trigger outputs on the AUX I/O cable’s SyncMASTER1 and
SyncMASTER2 connectors, click on the SyncMASTER: ON button. When
SyncMASTER is enabled, the output of the SyncMASTER1 connector is driven at
the frequency specified by the
Internal Trigger Frequency. The SyncMASTER2
frequency is also specified by the
Internal Trigger Frequency, but can be delayed
from 0 ns to 999,700 ns, in 100 ns increments.
5. Verify that the I.I.T. power switch on the rear of the PI-MAX4 is in the ON position, and
that
Enable Intensifier has been checked on the Common Acquisition Settings
expander.
6. When ready, click Acquire to start image acquisition.
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